THEFT-ALARM SYSTEM
Troubleshooting
2.
KEY-REMINDER
SWITCH INPUT CIRCUIT
Sub fusible link
JIB
or storage
connector
ETACS
control unit
(electronic
control unit)
Description of operation
The key-reminder switch is switched OFF and HIGH-level
signals are sent to the ECU when the key is inserted into the
ignition key cylinder: when the key is removed, the
reminder switch is switched ON and LOW-level signals are
sent to the ECU.
ECU terminal voltage (Connection condition of the ECU
connector)
ECU
Signal
Condition
Terminal
terminal No.
voltage
I
Key-reminder
Key removed
positive voltage
switch
Key inserted
ov
Checking the key-reminder switch circuit (Disconnect the
connector of the ECU and check at the wiring harness side)
ECU
terminal
No.
Connected
to measured
component
Measurement
Tester
connection
Check
condition
Standard
R e s i s t a n c e
Checking individual part:
Key-reminder switch Refer to
Ignition switch Refer to
Off Draw
Revision
I